CVE-2019-10072: High severity Apache Tomcat vulnerability

Published Jun 21, 2019
·
Updated

Apache Tomcat is vulnerable to a denial of service, caused by HTTP/2 connection window exhaustion on write. By failing to send WINDOWUPDATE messages, a remote attacker could exploit this vulnerability to block threads on the server and cause a denial of service.

Other sources

The fix for CVE-2019-0199 was incomplete and did not address HTTP/2 connection window exhaustion on write in Apache Tomcat versions 9.0.0.M1 to 9.0.19 and 8.5.0 to 8.5.40 . By not sending WINDOWUPDATE messages for the connection window (stream 0) clients were able to cause server-side threads to block eventually leading to thread exhaustion and a DoS.

The fix for CVE-2019-0199 was incomplete and did not address HTTP/2 connection window exhaustion on write. By not sending WINDOWUPDATE messages for the connection window (stream 0) clients were able to cause server-side threads to block eventually leading to thread exhaustion and a DoS.

References:

http://tomcat.apache.org/security-9.html#FixedinApacheTomcat9.0.20 http://tomcat.apache.org/security-8.html#FixedinApacheTomcat8.5.41 http://mail-archives.us.apache.org/modmbox/www-announce/201906.mbox/%3Cca69531a-1592-be7b-60ce-729549c7f812%40apache.org%3E

Upstream commits:

Tomcat 9.0: https://github.com/apache/tomcat/commit/7f748eb https://github.com/apache/tomcat/commit/ada725a

Tomcat 8.5 https://github.com/apache/tomcat/commit/0bcd69c https://github.com/apache/tomcat/commit/8d14c6f

— Red Hat

Affected Software

80 affected componentsFixes available
redhat/jws5-ecj<0:4.12.0-1.redhat_1.1.el6
0:4.12.0-1.redhat_1.1.el6
redhat/jws5-javapackages-tools<0:3.4.1-5.15.11.el6
0:3.4.1-5.15.11.el6
redhat/jws5-jboss-logging<0:3.3.2-1.Final_redhat_00001.1.el6
0:3.3.2-1.Final_redhat_00001.1.el6
redhat/jws5-tomcat<0:9.0.21-10.redhat_4.1.el6
0:9.0.21-10.redhat_4.1.el6
redhat/jws5-tomcat-native<0:1.2.21-34.redhat_34.el6
0:1.2.21-34.redhat_34.el6
redhat/jws5-tomcat-vault<0:1.1.8-1.Final_redhat_1.1.el6
0:1.1.8-1.Final_redhat_1.1.el6
redhat/jws5-ecj<0:4.12.0-1.redhat_1.1.el7
0:4.12.0-1.redhat_1.1.el7
redhat/jws5-javapackages-tools<0:3.4.1-5.15.11.el7
0:3.4.1-5.15.11.el7
redhat/jws5-jboss-logging<0:3.3.2-1.Final_redhat_00001.1.el7
0:3.3.2-1.Final_redhat_00001.1.el7
redhat/jws5-tomcat<0:9.0.21-10.redhat_4.1.el7
0:9.0.21-10.redhat_4.1.el7
redhat/jws5-tomcat-native<0:1.2.21-34.redhat_34.el7
0:1.2.21-34.redhat_34.el7
redhat/jws5-tomcat-vault<0:1.1.8-1.Final_redhat_1.1.el7
0:1.1.8-1.Final_redhat_1.1.el7
redhat/jws5-ecj<0:4.12.0-1.redhat_1.1.el8
0:4.12.0-1.redhat_1.1.el8
redhat/jws5-javapackages-tools<0:3.4.1-5.15.11.el8
0:3.4.1-5.15.11.el8
redhat/jws5-jboss-logging<0:3.3.2-1.Final_redhat_00001.1.el8
0:3.3.2-1.Final_redhat_00001.1.el8
redhat/jws5-tomcat<0:9.0.21-10.redhat_4.1.el8
0:9.0.21-10.redhat_4.1.el8
redhat/jws5-tomcat-native<0:1.2.21-34.redhat_34.el8
0:1.2.21-34.redhat_34.el8
redhat/jws5-tomcat-vault<0:1.1.8-1.Final_redhat_1.1.el8
0:1.1.8-1.Final_redhat_1.1.el8
redhat/Apache Tomcat<9.0.20
9.0.20
redhat/Apache Tomcat<8.5.41
8.5.41
maven/org.apache.tomcat.embed:tomcat-embed-core>=8.5.0<8.5.41
8.5.41
maven/org.apache.tomcat.embed:tomcat-embed-core>=9.0.0.M1<9.0.20
9.0.20
Apache Tomcat>=8.5.0<=8.5.40
Apache Tomcat>=9.0.1<=9.0.19
Apache Tomcat=9.0.0-milestone1
Apache Tomcat=9.0.0-milestone10
Apache Tomcat=9.0.0-milestone11
Apache Tomcat=9.0.0-milestone12
Apache Tomcat=9.0.0-milestone13
Apache Tomcat=9.0.0-milestone14
Apache Tomcat=9.0.0-milestone15
Apache Tomcat=9.0.0-milestone16
Apache Tomcat=9.0.0-milestone17
Apache Tomcat=9.0.0-milestone18
Apache Tomcat=9.0.0-milestone19
Apache Tomcat=9.0.0-milestone2
Apache Tomcat=9.0.0-milestone20
Apache Tomcat=9.0.0-milestone21
Apache Tomcat=9.0.0-milestone22
Apache Tomcat=9.0.0-milestone23
Apache Tomcat=9.0.0-milestone24
Apache Tomcat=9.0.0-milestone25
Apache Tomcat=9.0.0-milestone26
Apache Tomcat=9.0.0-milestone27
Apache Tomcat=9.0.0-milestone3
Apache Tomcat=9.0.0-milestone4
Apache Tomcat=9.0.0-milestone5
Apache Tomcat=9.0.0-milestone6
Apache Tomcat=9.0.0-milestone7
Apache Tomcat=9.0.0-milestone8
Apache Tomcat=9.0.0-milestone9
Apache Tomcat=9.0.0-m1
Apache Tomcat=9.0.0-m10
Apache Tomcat=9.0.0-m11
Apache Tomcat=9.0.0-m12
Apache Tomcat=9.0.0-m13
Apache Tomcat=9.0.0-m14
Apache Tomcat=9.0.0-m15
Apache Tomcat=9.0.0-m16
Apache Tomcat=9.0.0-m17
Apache Tomcat=9.0.0-m18
Apache Tomcat=9.0.0-m19
Apache Tomcat=9.0.0-m2
Apache Tomcat=9.0.0-m20
Apache Tomcat=9.0.0-m21
Apache Tomcat=9.0.0-m22
Apache Tomcat=9.0.0-m23
Apache Tomcat=9.0.0-m24
Apache Tomcat=9.0.0-m25
Apache Tomcat=9.0.0-m26
Apache Tomcat=9.0.0-m27
Apache Tomcat=9.0.0-m3
Apache Tomcat=9.0.0-m4
Apache Tomcat=9.0.0-m5
Apache Tomcat=9.0.0-m6
Apache Tomcat=9.0.0-m7
Apache Tomcat=9.0.0-m8
Apache Tomcat=9.0.0-m9
IBM GDE<=3.0.0.2
debian/tomcat9
9.0.43-2~deb11u109.0.107-0+deb11u29.0.70-29.0.95-19.0.115-1

Remediation

Recommended actions to resolve this vulnerability, in priority order.

  1. Upgrade

    Upgrade redhat/jws5-ecj to a version that resolves this vulnerability.

    Fixed in 0:4.12.0-1.redhat_1.1.el6
  2. Upgrade

    Upgrade redhat/jws5-javapackages-tools to a version that resolves this vulnerability.

    Fixed in 0:3.4.1-5.15.11.el6
  3. Upgrade

    Upgrade redhat/jws5-jboss-logging to a version that resolves this vulnerability.

    Fixed in 0:3.3.2-1.Final_redhat_00001.1.el6
  4. Upgrade

    Upgrade redhat/jws5-tomcat to a version that resolves this vulnerability.

    Fixed in 0:9.0.21-10.redhat_4.1.el6
  5. Upgrade

    Upgrade redhat/jws5-tomcat-native to a version that resolves this vulnerability.

    Fixed in 0:1.2.21-34.redhat_34.el6
  6. Upgrade

    Upgrade redhat/jws5-tomcat-vault to a version that resolves this vulnerability.

    Fixed in 0:1.1.8-1.Final_redhat_1.1.el6
  7. Upgrade

    Upgrade redhat/jws5-ecj to a version that resolves this vulnerability.

    Fixed in 0:4.12.0-1.redhat_1.1.el7
  8. Upgrade

    Upgrade redhat/jws5-javapackages-tools to a version that resolves this vulnerability.

    Fixed in 0:3.4.1-5.15.11.el7
  9. Upgrade

    Upgrade redhat/jws5-jboss-logging to a version that resolves this vulnerability.

    Fixed in 0:3.3.2-1.Final_redhat_00001.1.el7
  10. Upgrade

    Upgrade redhat/jws5-tomcat to a version that resolves this vulnerability.

    Fixed in 0:9.0.21-10.redhat_4.1.el7
  11. Upgrade

    Upgrade redhat/jws5-tomcat-native to a version that resolves this vulnerability.

    Fixed in 0:1.2.21-34.redhat_34.el7
  12. Upgrade

    Upgrade redhat/jws5-tomcat-vault to a version that resolves this vulnerability.

    Fixed in 0:1.1.8-1.Final_redhat_1.1.el7
  13. Upgrade

    Upgrade redhat/jws5-ecj to a version that resolves this vulnerability.

    Fixed in 0:4.12.0-1.redhat_1.1.el8
  14. Upgrade

    Upgrade redhat/jws5-javapackages-tools to a version that resolves this vulnerability.

    Fixed in 0:3.4.1-5.15.11.el8
  15. Upgrade

    Upgrade redhat/jws5-jboss-logging to a version that resolves this vulnerability.

    Fixed in 0:3.3.2-1.Final_redhat_00001.1.el8
  16. Upgrade

    Upgrade redhat/jws5-tomcat to a version that resolves this vulnerability.

    Fixed in 0:9.0.21-10.redhat_4.1.el8
  17. Upgrade

    Upgrade redhat/jws5-tomcat-native to a version that resolves this vulnerability.

    Fixed in 0:1.2.21-34.redhat_34.el8
  18. Upgrade

    Upgrade redhat/jws5-tomcat-vault to a version that resolves this vulnerability.

    Fixed in 0:1.1.8-1.Final_redhat_1.1.el8
  19. Upgrade

    Upgrade maven/org.apache.tomcat.embed:tomcat-embed-core to a version that resolves this vulnerability.

    Fixed in 8.5.41
  20. Upgrade

    Upgrade maven/org.apache.tomcat.embed:tomcat-embed-core to a version that resolves this vulnerability.

    Fixed in 9.0.20
  21. Upgrade

    Upgrade debian/tomcat9 to a version that resolves this vulnerability.

    Fixed in 9.0.43-2~deb11u10Fixed in 9.0.107-0+deb11u2Fixed in 9.0.70-2Fixed in 9.0.95-1Fixed in 9.0.115-1
  22. Upgrade

    Upgrade redhat/Apache Tomcat to a version that resolves this vulnerability.

    Fixed in 9.0.20
  23. Upgrade

    Upgrade redhat/Apache Tomcat to a version that resolves this vulnerability.

    Fixed in 8.5.41
  24. Upgrade

    Upgrade Apache Tomcat 8.5 to a version that resolves this vulnerability.

    Fixed in 8.5.41
  25. Upgrade

    Upgrade Apache Tomcat 9.0 to a version that resolves this vulnerability.

    Fixed in 9.0.20

Event History

Jun 21, 2019
CVE Published
12:00 AM
CVE Published
via MITRE·05:56 PM
Data Sourced
via MITRE·05:56 PM
DescriptionWeakness
Jun 25, 2019
Data Sourced
via Red Hat·08:23 AM
DescriptionSeverityAffected Software
Jun 26, 2019
Advisory Published
via GitHub·01:09 AM
Feb 20, 2026
Data Sourced
via Ubuntu·09:34 PM
RemedyDescriptionSeverityAffected Software
Data Sourced
via Launchpad·09:35 PM
Description
Data Sourced
via Debian·09:35 PM
DescriptionAffected Software

Parent advisories

This vulnerability appears in the following advisories.

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Frequently Asked Questions

1

What is CVE-2019-10072?

CVE-2019-10072 is a vulnerability in Apache Tomcat that allows clients to cause server-side threads to become exhausted.

2

What is the severity of CVE-2019-10072?

CVE-2019-10072 has a severity rating of 5.3 (Medium).

3

Which versions of Apache Tomcat are affected by CVE-2019-10072?

Apache Tomcat versions 9.0.0.M1 to 9.0.19 and 8.5.0 to 8.5.40 are affected by CVE-2019-10072.

4

How can I fix CVE-2019-10072?

Update your Apache Tomcat installation to version 9.0.20 or later (for 9.x) or version 8.5.41 or later (for 8.5.x).

5

Where can I find more information about CVE-2019-10072?

You can find more information about CVE-2019-10072 at the following references: - [CVE-2019-10072](https://www.cve.org/CVERecord?id=CVE-2019-10072) - [NVD](https://nvd.nist.gov/vuln/detail/CVE-2019-10072) - [Apache Tomcat Security](http://tomcat.apache.org/security-8.html#Fixed_in_Apache_Tomcat_8.5.41) - [Bugzilla](https://bugzilla.redhat.com/show_bug.cgi?id=1723708) - [Red Hat Security Advisory](https://access.redhat.com/errata/RHSA-2019:3931)

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